package com.gyhoo.firstbootdemo.config;

import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class MyIntercepteor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response,
                             Object handler) throws Exception {
        HttpSession session = request.getSession();
        Object username = session.getAttribute("username");
        if (!StringUtils.isEmpty(username)){
            return true;
        }
        request.setAttribute("msg","没有权限访问，请先登录");
        request.getRequestDispatcher("/login.html").forward(request,response);
        return false;
    }
}
